- GLaDOS is still alive.
- The original protagonist (now named Chell) returns.
- Wheatley joins Chell as the guide.
- Atlas and P-body are the playable characters in coop.
- Release Date: April 19, 2011 (US) April 22, 2011 (EUR) April 21, 2011 (AUS)
- Releasing for 360, PS3, and PC.
- Price: 360 - $60; PS3(+PC) - $60; PC - $50
- Cross platform play between the PS3 and PC will be included.
- Save files can go between PS3 and PC.
- Single Player and Coop are completely different campaigns.
- Single Player and Coop combined are about 10-12 hours.
Edited by Epona - 4/19/11 at 1:38pm